An interactive simulation environment prototype for the study of continuous models has been implemented using the SmallTalk/V system. Models are designed in a graphical manner and can be directly executed without processing, compiling and linking. Therefore, models can instantaneously react to new configurations. Owing to the setmentation of the submodel code, the system suports hierarchical simulation design and execution without restrictions. A directed graph, which reflects the computational flow, is used to direct the interactive experiments.